Recent Advances in Molecular Genetic Linkage Maps of Cultivated Peanut

Guo, B and Pandey, M K and He, G and Zhang , X and Liao , B and Culbreath , A and Varshney, R K and Nwosu, V and Wilson, R F and Stalker , H T (2013) Recent Advances in Molecular Genetic Linkage Maps of Cultivated Peanut. Peanut Science, 40 (2). pp. 95-106. ISSN 0095-3679

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The competitiveness of peanuts in domestic and global markets has been threatened by losses in productivity and quality that are attributed to diseases, pests, environmental stresses and allergy or food safety issues. Narrow genetic diversity and a deficiency of polymorphic DNA markers severely hindered construction of dense genetic maps and quantitative trait loci (QTL) mapping in order to deploy linked markers in marker-assisted peanut improvement. The U.S. Peanut Genome Initiative (PGI) was launched in 2004, and expanded to a global effort in 2006 to address these issues through coordination of international efforts in genome research beginning with molecular marker development and improvement of map resolution and coverage. Ultimately, a peanut genome sequencing project was launched in 2012 by the Peanut Genome Consortium (PGC). We reviewed the progress for accelerated development of peanut genomic resources in peanut, such as generation of expressed sequenced tags (ESTs) (252,832 ESTs as December 2012 in the public NCBI EST database), development of molecular markers (over 15,518 SSRs), and construction of peanut genetic linkage maps, in particular for cultivated peanut. Several consensus genetic maps have been constructed, and there are examples of recent international efforts to develop high density maps. An international reference consensus genetic map was developed recently with 897 marker loci based on 11 published mapping populations. Furthermore, a high-density integrated consensus map of cultivated peanut and wild diploid relatives also has been developed, which was enriched further with 3693 marker loci on a single map by adding information from five new genetic mapping populations to the published reference consensus map

Item Type: Article
Uncontrolled Keywords: Arachis hypogaea, Arachis species, genomics, genetic maps, molecular markers, molecular breeding, Peanut Genome Consortium (PGC)
Subjects: Mandate crops > Groundnut
Others > Genetics and Genomics
Depositing User: Mr B K Murthy
Date Deposited: 01 Apr 2014 10:55
Last Modified: 01 Apr 2014 10:55
Official URL:
Acknowledgement: We would like to express our appreciation to U.S. Peanut Industries and the leadership of the Peanut Foundation and American Peanut Council, particularly to Howard Valentine for his efforts to make this PGI and PGC a reality. We also thank Dr. Howard Shapiro of Mars Inc. for initiating discussions with BGI and opening the way for collaborations with Chinese researchers. We are grateful for the financial support from USDAARS, Peanut Foundation, Georgia Peanut Commission and U.S. National Peanut Board, Mars Inc., Chinese genome collaborators (Henan Academy of Ag. Sci., Oil Crops Research Institute of Chinese Academy of Ag. Sci., and Hi-Tech Center of Shandong Academy of Ag. Sci.), National Fund of the Basic and Strategic Research in Agriculture (NFBSRA) of the Indian Council of Agriculture Research (ICAR), and
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